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| author | Al Viro <viro@zeniv.linux.org.uk> | 2011-03-16 02:45:02 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2011-03-16 04:57:03 -0400 |
| commit | 0e794589e588a88d34e339feee50c72606fb21a7 (patch) | |
| tree | 74c193941b49c0c3bfe3e0934aaf4bbdff22eab4 /fs/namei.c | |
| parent | d10902812c9cd5583130a4ebb9ad19c60b68149d (diff) | |
| download | lwn-0e794589e588a88d34e339feee50c72606fb21a7.tar.gz lwn-0e794589e588a88d34e339feee50c72606fb21a7.zip | |
fix follow_link() breakage
commit 574197e0de46a8a4db5c54ef7b65e43ffa8873a7 had a missing
piece, breaking the loop detection ;-/
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/namei.c')
| -rw-r--r-- | fs/namei.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/fs/namei.c b/fs/namei.c index 0a601cae23de..b912b7abe747 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -753,9 +753,11 @@ follow_link(struct path *link, struct nameidata *nd, void **p) BUG_ON(nd->flags & LOOKUP_RCU); + if (link->mnt == nd->path.mnt) + mntget(link->mnt); + if (unlikely(current->total_link_count >= 40)) { *p = ERR_PTR(-ELOOP); /* no ->put_link(), please */ - path_put_conditional(link, nd); path_put(&nd->path); return -ELOOP; } @@ -765,9 +767,6 @@ follow_link(struct path *link, struct nameidata *nd, void **p) touch_atime(link->mnt, dentry); nd_set_link(nd, NULL); - if (link->mnt == nd->path.mnt) - mntget(link->mnt); - error = security_inode_follow_link(link->dentry, nd); if (error) { *p = ERR_PTR(error); /* no ->put_link(), please */ |